County of Marin - News Releases - Assessment Appeals

For Immediate Release
June 30, 2023

Assessment Appeals Filing Period Opens

From July 2 through November 30, property owners may appeal

San Rafael, CA – Marin County property owners who disagree with the assessed value listed on their 2023 regular property tax bill have until 5 p.m. Thursday, November 30, to file an appeal with the Marin County Assessment Appeals Board.

The appeal period begins July 2. The online form and instructions to appeal an assessment are on the County of Marin website. Paper forms may be picked up in the Board of Supervisors' office at the Marin County Civic Center, Suite 329, 3501 Civic Center Drive, San Rafael.

Residents must fill out an assessment appeal application for each assessor's parcel or property identification number. There is a $50 non-refundable processing fee for each application.

The Assessment Appeals Board, which hears appeals from taxpayers on property assessments, is governed by the rules and regulations of the Board of Equalization and property tax laws of the State of California.

Additional information about the Assessment Appeals Board is available on the website. Email the Assessment Appeals clerk or call (415) 473-7345.


If you are a person with a disability and require information or materials in alternative formats - or if you require accommodation to participate in a county program, service or activity - please contact department staff at (415) 473-7331 or (415) 473-4381 (voice/TTY) or e-mail the Disability Access team.


Marie Banas
Deputy Clerk of the Board
Board of Supervisors

Marin County Civic Center
3501 Civic Center Drive
Suite 329
San Rafael, CA 94903
(415) 473-7345
CRS Dial 711
Email: Marie Banas